TypeError：__init __（）需要1个位置参数，但有3个被给出

Question

我知道这个标题看起来很熟悉一些旧问题，但我已经看过他们中的每一个，他们都没有解决。这里是我的代码：

TypeError: __init__() takes 1 positional argument but 3 were given 

Traceback (most recent call last) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1836, in __call__ 
return self.wsgi_app(environ, start_response) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1820, in wsgi_app 
response = self.make_response(self.handle_exception(e)) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1403, in handle_exception 
reraise(exc_type, exc_value, tb) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\_compat.py", line 33, in reraise 
raise value 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1817, in wsgi_app 
response = self.full_dispatch_request() 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1477, in full_dispatch_request 
rv = self.handle_user_exception(e) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1381, in handle_user_exception 
reraise(exc_type, exc_value, tb) 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\_compat.py", line 33, in reraise 
raise value 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1475, in full_dispatch_request 
rv = self.dispatch_request() 
File "C:\Users\hp user\virtual_flask\lib\site-packages\flask\app.py", line 1461, in dispatch_request 
return self.view_functions[rule.endpoint](**req.view_args) 
File "C:\Users\hp user\PycharmProjects\flask123\views.py", line 19, in create 
create_post = Post(my_form.title.data, my_form.text.data) 
TypeError: __init__() takes 1 positional argument but 3 were given 
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error. 
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我班如下：

Models.py

from app import db 
from datetime import datetime 


class Post(db.Model): 
    post_id = db.Column(db.Integer, primary_key=True) 
    title = db.Column(db.String(100)) 
    text = db.Column(db.Text()) 
    created_time = db.Column(db.DateTime()) 

    def __init__(self, title, text, created_time=None): 
     self.title = title 
     self.text = text 
     if created_time is None: 
      self.created_time = datetime.utcnow() 
     else: 
      self.created_time = created_time 

views.py

from app import app, db 
from flask import render_template, request, url_for 
from forms import CreateForm 
from models import Post 


@app.route('/') 
def homepage(): 
    return render_template('base.html') 


@app.route('/create', methods=['GET', 'POST']) 
def create(): 
    form = CreateForm(csrf_enabled=False) 
    if request.method == 'GET': 
     return render_template('create.html', form=form) 
    if request.method == 'POST': 
     if form.validate_on_submit(): 
      create_post = Post(form.title.data, form.text.data) 
      db.session.add(create_post) 
      db.session.commit() 
    return redirect(url_for('homepage')) 

我已经与所有可能的解决方案尝试并检查我的代码拼写错误，但我没有发现。

Answer 1

误差

TypeError: __init__() takes 1 positional argument but 3 were given

发生在码

create_post = Post(my_form.title.data, my_form.text.data) 

相反通过位置参数创建Post对象的，通keyword arguments：

create_post = Post(title=my_form.title.data, text=my_form.text.data)